Cuesta College, San Luis Obispo, CA
Students have a weekly online reading assignment (hosted by SurveyMonkey.com), where they answer questions based on reading their textbook, material covered in previous lectures, opinion questions, and/or asking (anonymous) questions or making (anonymous) comments. Full credit is given for completing the online reading assignment before next week's lecture, regardless if whether their answers are correct/incorrect. Selected results/questions/comments are addressed by the instructor at the start of the following lecture.
The following questions were asked on reading textbook chapters and previewing presentations on Kirchhoff's laws.
Selected/edited responses are given below.
Describe something you found interesting from the assigned textbook reading or presentation preview, and explain why this was personally interesting for you.
"How all the starts out there have different light spectra, like bar codes. But if you know what to look for and how to read that code and those different colors of light than you can tell exactly what you are looking for. That is really fascinating to me that there are so many different tools to use in identifying celestial objects."
"That the sun has its own atmosphere because all through my schooling career I only have heard of Earth's atmosphere."
"The Doppler effect--because growing up I always noticed that with sounds and noises but never really knew what it was called."
"The section on sound wavelengths was interesting. I always wondered why a car horn sounds different when it's coming close and when it's passing me by."
"What I found interesting was in the Doppler effect was that the amount of change in wavelengths depends on the speed."
"The Doppler effect and how it is present in our daily lives."
"The Doppler effect and how it can occur for waves of all types."
"How the blueshift and redshift works."
"They overall subject is interesting, but I especially commend the teaching methods in the presentation.s It breaks things down so simply and it's fun to throw foods and/or TV fandom into the examples and definitions. It appeals to the students and makes the classes feel more engaging and familiar."
Describe something you found confusing from the assigned textbook reading or presentation preview, and explain why this was personally confusing for you.
"more clarification with is the three different spectra used to identify and distinguish. they all use wavelengths that are just broken up into different segments."
"What objects give out certain spectra. I think I get it but I'm still a bit confused."
"How the light spectra work. I had a rough time understanding which was which in the examples."
"The differences between absorption and emission spectra."
"The spectrum examples may need a little more explanation because it's hard for me to grasp the exact difference in the three spectrums discussed. I think i get the scientific explanation, but the visual distinguishing actually feels harder."
"How the Doppler effect is used in astronomy."
"Red- and blueshifts in relation to the Doppler effect."
I believe Pluto should be a planet. (Original responses)
Strongly disagree. [0] Disagree. *** [3] Neutral. ******* [7] Agree. ** [2] Strongly Agree. [0]
I believe Pluto should be a planet. (This is a follow-up question.)
Strongly disagree. [0] Disagree. ******* [7] Neutral. ******* [7] Agree. [0] Strongly Agree. * [1]
Briefly explain your answer to the previous question (whether Pluto should be a planet).
"Because according to the IAU's step-by-step process of what makes a planet a planet, it does not have the required features to make it a planet."
"I never took that much interest in it."
"There are three rules or criteria that must be met in order for a given object to be counted as a planet. (1) needs to orbit the Sun, (2) needs to have a relatively round shape, and (3) needs to DOMINATE the orbit it's in. In Pluto's case, there are several other bodies in it's orbit. Therefore, since Pluto isn't dominating the orbit, it can't be counted as a planet, rather it is a dwarf planet. From a scientific viewpoint, I disagree that Pluto should be counted as the ninth planet in our solar system. I don't STRONGLY disagree because I'm not a Pluto hater. This dwarf planet deserves some dignity. But it wouldn't be the end of the world for me if Pluto was the ninth planet."
"I believe Pluto is not a planet because like we described in class what classifies large bodies as a planet/asteroid etc. Pluto just seems too small, and is out in the Kuiper belt amongst other asteroids. I would identify Pluto as small moon or large asteroid."
"I literally don't even care anymore."
"I could take it or leave it. I was really for it before taking this class, but now that I have learned more about what makes a planet and how they are classified I understand a bit more how they classified it as a dwarf planet. But who knows, maybe that will change again in our lifetime."
"I'm biased due to learning it was and learning why it isn't. It will be again in 100 years."
"It does not follow the criteria of being a planet so it shouldn't be."
"I disagree because it does not qualify to be a planet with the new expectations."
"Pluto doesn’t qualify."
"It matters 0 to me on a scale of 1 to 10 and shouldn't matter to anyone."
"There is evidence against it being a planet."
"My girlfriend and her friends whom have previously taken the course said I have to say I strongly agree."
"I was never interested in the planets, or didn't know much about them."
Match the spectrum type with their appearance.
(Only correct responses shown.)
Rainbow containing all colors: continuous [63%]
Rainbow with thin black lines: absorption [56%]
Colored lines on a black background: emission [56%]
Given off by hot, dense object: continuous [56%]
Given off by hot, diffuse gas atoms: emission [50%]
Passing through cool, diffuse gas atoms: [63%]
continuous; rainbow. **** [4] emission; series of bright lines on a dark background. ********* [9] absorption; series of dark lines on a rainbow background. *** [3] (Unsure/guessing/lost/help!) [0]
continuous; rainbow. **** [4] emission; series of bright lines on a dark background. *** [3] absorption; series of dark lines on a rainbow background. ********* [9] (Unsure/guessing/lost/help!) [0]
continuous; rainbow. **** [4] emission; series of bright lines on a dark background. ******** [8] absorption; series of dark lines on a rainbow background. **** [4] (Unsure/guessing/lost/help!) [0]
continuous; rainbow. *** [3] emission; series of bright lines on a dark background. ********* [9] absorption; series of dark lines on a rainbow background. ** [2] (Unsure/guessing/lost/help!) ** [2]
continuous; rainbow. **** [4] emission; series of bright lines on a dark background. ********* [9] absorption; series of dark lines on a rainbow background. *** [3] (Unsure/guessing/lost/help!) [0]
starts loud, then gets quieter. * [1] starts quiet, then gets louder. [0] starts quiet, gets louder, then goes back down to quiet. ************* [13] starts loud, gets quieter, then goes back up to loud. ** [2] (Unsure/guessing/lost/help!) [0]
Suppose you are standing on the sidewalk as a car, with its horn continuously on, passes by (video link, same as above). The pitch (high note/low note) of the car horn:
starts high, then drops lower. **** [4] starts low, then goes higher. [0] starts low, goes higher, then drops back down to low. ******* [12] starts high, goes lower, then goes back up to high. [0] (Unsure/guessing/lost/help!) [0]
Ask the instructor an anonymous question, or make a comment. Selected questions/comments may be discussed in class.
"I thought this section was interesting even though I need clarity on some few things."
"Does computer monitor have a certain light spectrum?" (Yes, it displays colors by combining light from three different light-emitting diodes, each with their own characteristic emission spectra from electrons jumping down to lower orbitals.)
"Should we be concerned that you like a lot of hot things?" (I was born and raised in Hawaii. I don't like being cold.)
"Will this class get easier? (It will be different. Whether that's easier or harder depends on your learning style for more traditional science stuff (law, equations) instead of the spatial reasoning stuff (starwheels, lunar phases) that we've been doing so far.)
"No comment." (You just did.)
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